When you get a bike like this, you divide it into systems, then go through ever system, and subsystem. You always get new spark plugs and plug wires. I've read through this thread, I started reading it when you posted it, but decided you seemed like you were going to take the long road home. This is necessary sometimes when finances call for that. If you do one caliper, do the other one too. Measure the thickness of the rotors, and check the rear brake, as now you are getting into systems which could take your life, or mangle you up a bit. Assume all the cables will need to be changed, so, in the very least, get proper cable lube, and lube all of them, they could last another 40 years.
That particular "L" version of that bike is a like the placenta of the motorcycle, the doctors kept the wrong piece, and threw out the baby, however, yours is a particularly clean looking bike, so those pieces are the most expensive. A set of flat bars with 3" to 4" Risers will enhance your riding experience greatly. When I ran a Suzuki Parts department back in 1983, we did that to a lot of those bikes, and removed the silly passenger rail, and the bikes looked great. IMHO
That particular "L" version of that bike is a like the placenta of the motorcycle, the doctors kept the wrong piece, and threw out the baby, however, yours is a particularly clean looking bike, so those pieces are the most expensive. A set of flat bars with 3" to 4" Risers will enhance your riding experience greatly. When I ran a Suzuki Parts department back in 1983, we did that to a lot of those bikes, and removed the silly passenger rail, and the bikes looked great. IMHO